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1562 articles for “X.509”
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Characterization Techniques for Thin Film Coatings Based on SiO₂, TiO₂, and ZrO₂
Abstract: Thin film coatings made from silicon dioxide (SiO₂), titanium dioxide (TiO₂) and zirconium dioxide (ZrO₂) have attracted great interest owing to their excellent optical, electrical, mechanical and chemical properties. These oxide thin films are widely used in microelectronics, solar cells, sensors, biomedical devices, photocatalysis, anti-reflective coatings and protective layers. The structural, morphological, compositional, optical and mechanical properties of these coatings are closely related to their performance and reliability. Therefore, thorough …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 2, 2026 Read article
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Extensible Messaging and Presence Protocol Using Wireless Sensor Network
Abstract: Wireless sensor networks have significant potential in the home environment. Home application scenarios include monitoring and interaction from several remote or local devices such as mobile phones, televisions or computers. In this paper we propose an architecture for a network based on internet protocol (IP)-enabled wireless sensors. The communication system is based on the XMPP-protocol which is shown to be highly suitable for the sensor networks. XMPP provides a push …
Published in Journal of Advances in Shell Programming · Vol. 2, Issue 2, 2015 · pp. 22–27 Read article
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The Extensible Messaging and Presence Protocol Based Wireless Sensor Networks
Abstract: AbstractWireless device networks have important potential within the home atmosphere. Home application situations embrace observance and interaction from many remote or native devices like mobile phones, televisions or computers. During this paper, we have a tendency to propose design for a network supported IP-enabled wireless sensors. The communication system is predicated on the XMPP-protocol that is shown to be extremely appropriate for the device networks. XMPP provides a push based …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 4, Issue 1, 2017 · pp. 9–12 Read article
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IoT-enhanced Extensible Messaging Presence Protocol: A Multiple Multicast Architecture for Diverse Applications
Abstract: Extensible Messaging Presence Protocol (XMPP) is a real-time information transmission specification protocol based on IP technology and XML supporting publish/subscribe messaging systems. Publishers use multicast to send data simultaneously to multiple subscribers. IoT devices benefit enormously by using XMPP Extension Protocols (XEPs) available in the literature that enables using XMPP for multicast. Publishers are considering Multiple Multicast (MMC) to address subscriber overlap while sending messages to multiple subscribers simultaneously. This …
Published in Journal of Advances in Shell Programming · Vol. 10, Issue 2, 2023 · pp. 1–13 Read article
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Modification of Structural and Electrical Properties of GDC with Sb3+ Ions
Abstract: Gadolinium doped cerium (GDC) is a potential candidate as electrolyte in the solid oxide fuel cells operating in intermediate temperatures. The optimum performance of GDC is obtained only when sintered at higher temperatures (~1400°C), where cerium is prone to reduction. Improvement in the conductivity and stability of GDC is expected by doping it with trivalent ions. In the present context, successful attempts have been made to synthesize Ce0.8Gd0.1Sb0.1O2-δ by solid …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 3, 2016 · pp. 27–35 Read article
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A New Robust and High-Performance Sub-threshold XOR/XNOR Circuit
Abstract: This paper proposes an efficient 5-Transistor XOR/XNOR circuit. The proposed circuit exhibits higher performance, lower power dissipation and power-delay product (PDP). The proposed design is compared with existing XOR/XNOR circuits for sub-threshold operation. It offers 1.31 × improvement in delay and 1.28 × improvement in PDP compared to its counterpart. It proves its robustness by offering 2.27 × improvement in delay variability, 1.32 × improvement in power dissipation variability and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 1, Issue 1, 2014 · pp. 37–46 Read article
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Qualifying for Student Competencies through Reengineering
Abstract: The consortium of competencies required by a today's engineer are widening every day, thanks to reengineering, which accompanies in a horizon of information technology. The impetus was to make manual operations@ high technology physically less taxing. Various operations which were time consuming have now been made quicker and/or multi-tasking and so on. The new realization of meeting customer and societal requirements has facilitated a proponent that more accent is required …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 5, Issue 1, 2015 · pp. 51–62 Read article
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Techniques for Characterization of Anticancer Drug Loaded Polymeric Nanoparticles: A Review
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Polymeric nanoparticles have been used for targeted drug delivery against different diseases during last decades. Particularly in cancer, targeted polymeric nanoparticles can be used to deliver anticancer drugs to cancer cells with reduced cytotoxicity and greater efficacy. Various natural polymers like chitosan, albumin, gelatin and synthetic such as Polylactides (PLA), Poly (Lactide co-Glycolides) (PLGA) have been researched as carrier of anticancer drugs. …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 2, 2015 · pp. 32–43 Read article
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Synthesis and Characterization of Terbium Doped Strontium Aluminate Nanophosphor
Abstract: Luminescence investigations of Tb activated strontium aluminate phosphors prepared using the sol-gel method are described. The phosphor has been characterized by powder X-ray diffraction scanning electron microscope. Optical properties were studied by photoluminescence spectra. Photoluminescence studies of the prepared phosphors showed prominent IR emission, apart from near-band edge emission and green emission. Keywords: SrAl4O7, nanomaterial, sol-gel, photoluminescence, X-ray powder diffraction Cite this Article Jisha VT, Suresh G. Synthesis and Characterization …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 2, 2016 · pp. 25–28 Read article
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Hydrothermal synthesis of ZnS for efficient photodegradation of Malachite green
Abstract: In this work, ZnS nanoparticles were prepared by hydrothermal method. Various characterization techniques such as X-ray diffraction (XRD), UV-visible optical spectroscopy and FT-IR spectra were used to study the structural, composition and optical properties of synthesized nanoparticles. The XRD pattern showed that the prepared ZnS nanoparticles have a cubic zinc blende structure. The band gap is calculated from absorption spectra with the help of Taucplot and is found to be …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 11–15 Read article
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Impact of ETL/Absorber Interface layer on Perovskite (CH3NH3PbX3, X: I, Br, Cl) Solar Cell
Abstract: In this paper, the impact of ETL/Absorber interface layer has been studied on the efficiency of perovskite solar cell using perovskite materials such as methyl ammonium lead trihalide (MAPbX3, MA=CH3NH3, X: I, Br, Cl) through the SCAPS tool. Modeling and the numerical simulation have been performed with electrical properties of the MAPbX3 material used as the active layer and calculated different parameters such as open-circuit voltage (Voc), power conversion efficiency …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 21, Issue 2, 2019 · pp. 1–6 Read article
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Evaluation of Bioactive Compounds and Antibacterial Effect of Xanthium Indicum
Abstract: AbstractXanthium indicum L. is a common herbaceous weed found in India. One gram of the plant leaf was taken and different biochemical constituents, viz., moisture content, total carbohydrates, chlorophyll, free fatty acid, glucose, total lipid, protein, amino acid, calcium ascorbic acid and total alkaloid were estimated. The results indicated that significantly low levels of moisture content, total carbohydrates, chlorophyll and free fatty acid were present in the plant material. At …
Published in Research & Reviews : Journal of Herbal Science · Vol. 3, Issue 2, 2014 · pp. 25–29 Read article
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Bioremediation of TPH in Petroleum HydrocarbonContaminated Clay Soil with an Emerging Nutrient (Solpawa SBR-X TM)
Abstract: This research focuses on the bioremediation of total petroleum hydrocarbons (TPH) in petroleum hydrocarbon contaminated clay soil with an emerging nutrient (Solpawa SBR-XTM). A laboratory experiment was set up and successfully carried out in order to monitor TPH concentration among the various reactors (T1, T2, T3, and T4). This process was monitored for 7 days, 12 days, 22 days, 32 days, 42 days, and 52 days, respectively, for reactors 1, …
Published in International Journal of Pollution: Prevention & Control · Vol. 1, Issue 1, 2023 · pp. 9–16 Read article
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Exploring the Bioactive Potential of Himalayan Lichens: Phytochemical and Antimicrobial Profiling of Xanthoparmelia tinctina and Pyxine subcinerea Extracts
Abstract: The symbiotic association that develops between cyanobacteria, algae, and fungi results in the composite organism known as lichens, which has traits similar to those of plants but differs in its separate parent organisms. Lichens can have a variety of morphological characteristics, including foliose structures that resemble flat leaves, crustose structures that resemble flake crystals, fruticose branches that have short, leafless branches, and leprose-powder-like appearances. Due to their therapeutic potential, lichens …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 14, Issue 2, 2024 · pp. 21–28 Read article
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Design of Lead-Free Perovskite (CH3NH3SnX3, X=I) Solar Cell using SCAPS-1D
Abstract: Research on renewable energy conversion technology has accelerated due to the world's growing energy needs. Researchers from all over the world are interested in lead-based perovskite materials. These cells are being developed as a substitute for conventional solar cells (SCs) because they have the potential to increase solar energy conversion efficiency. Lead's advantageous electrical and optical characteristics make it a viable option for photovoltaic and optoelectronic applications. Lead's limited material …
Published in Journal of Semiconductor Devices and Circuits · Vol. 12, Issue 1, 2025 · pp. 37–43 Read article
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Electrodeposition and Magnetron Sputtering of Rhenium Coatings on Carbon-Carbon Composites for Enhanced Corrosion Resistance and Structural Integrity
Abstract: It is well known that tailored materials are gaining in-roads to aviation and other manufacturing industries where stringent requirements are to be met, due to high temperature erosion, which is a problem. In order to counter these issues, materials which can resist a very high temperature are to be sought. One of the several methods to combat this high temperature issue is to provide a metallic refractory material coating on …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 35–44 Read article
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Comparative Study of Structural and Optical Properties of Bismuth Ferrite Nanoparticles for Photovoltaic Applications Synthesized via Different Sol-Gel Methods
Abstract: Pure multiferroic bismuth ferrite (BiFeO3) nanoparticles were successfully synthesized using an energy-efficient, low-temperature sol-gel method, comparing two distinct approaches: auto-combustion and non-auto-combustion. To ensure phase stability, the precursor solution's pH was strictly maintained between 1 and 2 using ammonia solution (NH4OH), while ethylene glycol (C2H6O2) was employed as a chelating agent for the Fe3+ and Bi3+ cations. All samples underwent a final annealing process at 500 °C to promote crystallization. …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 1, 2026 · pp. 83–94 Read article
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Performance analysis of ETL/Absorber and Absorber/HTL Interface Layer on Perovskite (CH3NH3PbX3, X: I) Solar Cell
Abstract: The effectiveness of perovskite solar cells employing perovskite materials such as methyl ammonium lead tri halide (MAPbX3, MA=CH3NH3, X:I) has been investigated in this research with the use of the SCAPS tool. The electrical properties of the MAPbX3 material utilized for the active layer have been calculated through numerical simulation and modelling for various parameters, including open-circuit voltage (Voc), power conversion efficiency (PCE), fill factor (FF), and short-circuit current density …
Published in Journal of Microelectronics and Solid State Devices · Vol. 10, Issue 1, 2023 · pp. 8–14 Read article
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Radiopaque Polymer Composites for Improved Visualization of Interventional Devices
Abstract: Radiopaque polymer composites are increasingly important for improving the visualization of interventional medical devices under X-ray and fluoroscopic imaging while maintaining the flexibility, mechanical performance, and processability required for minimally invasive applications. This narrative review summarizes recent developments in radiopaque polymer composites, with emphasis on radiopaque filler selection, polymer–filler interactions, processing strategies, structure–property relationships, biocompatibility, and device applications. A focused literature search was conducted using PubMed, Scopus, Web of Science, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Structural, Morphological, Optical, and Electrical Properties of Sol–Gel Synthesized Bismuth Ferrite Nanoparticles for Photovoltaic Applications
Abstract: Solar cells are a promising renewable energy source, converting solar energy into electrical power. The performance and efficiency of solar cells can be enhanced by incorporating multiferroic materials, which have the potential to improve energy conversion. Bismuth ferrite (BFO) is one such material that has attracted attention for photovoltaic applications due to its bandgap energy, which ranges from 2 eV to 2.7 eV. However, its practical efficiency is currently low …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 2, 2026 · pp. 28–41 Read article